Work-table for shaping-machines.



No. 719,255.. 'PATBNTED JAN-.27, .1903.

J. G. POTTER & J. JOHNSTON. WORK TABLE FOR SHAPING MAGHINES.

APPLIOATION FILED JAN. 29, 1902. H0 MODEL. 3 SHEETS-SHEET l.

No. 719,255. 7 PATENTED JAN. 27, 1903.,

' J. G. POTTER 6/: J. JOHNSTON.

WORK TABLE FOR SHAPING MACHINES.

APPLICATION FILED JAN. 29, 1902. no MODEL. 3 sEnBTs-snsnM.

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No. 719,255. 'PATENTED JAN. 27, 1903. J. c. POTTER & J. JOHNSTON. WORKTABLE FOR SHAPING MACHINES.

APPLIGATIORFILED JAN. 29, 1902.

NO MbDEL. 3 SHEETS-SHEET 3.

JI x I 3 y G J m 0- u: 'E x v Jr v jyf. v I V a w S raits Patti? l FlCtJAMES C. POTTER AND JOHN JOHNSTON, OF PANVTUOKET, RI-IODE ISLAND,

ASSIGNORS TO POTTER AND JOHNSTON MACHINE COMPANY, OF PAW- TUCKET, RHODEISLAND.

WVORKTABLE FOR SHAPING-MACHINES.

SPEUIFEQATEON forming part of Letters Patent No. 719,255, dated January27, 1 903.

Application filed January 29, 1902. Serial No. 91,773. (No model.)

To all whom it may concern.-

Be it known that we, Janus O. Porrnn and JOHN JOHNSTON, of Pawtucket, inthe county of Providence, and in the State of Rhode Island, haveinvented certain new and useful Improvements in \Vork-Tables forShaping- Machines; and we do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theacio companying drawings, in which-- Figure 1 is a side elevation of ashaping machine provided with a work-table embodying our invention. Fig.2 is a front elevation thereof. Fig. 3 is a detail view inlongitur5dinal section of the work-table, and Fig. 4 is a like view incross-section.

Letters of like name and kind refer to like parts in each of thefigures.

The object of our invention is to provide a work-table for shaping andother machines which will have capacity for adjustment to add to thevariety of the work that the machine may do; and to this endourinvention consists in the work-table having the features ofconstruction substantially as hereinafter specified.

\Ve illustrate our work-table applied to our shaping-machine, whichforms the subject of United States Patent No. 649,175, granted May 8,1900, the work-holder A being mounted upon a horizontally-movablecarriage B and the latter upon a vertically-movable carriage O. As inthe machine of the patent, the work-holder A is hollow, it having acylindrical opening by which it is mounted upon a cylindrical bearing ortrunnion b, that projects horizontally from the carriage B, upon whichthe holder may be revolved to present the Work clamped to or held uponit at vari- 0 ous angles. For so revolving the workholder the trunnionhas Worm-teeth D in its periphery, meshing with which is a Worm E on ashaft F, mounted in hearings on the holder A, the shaft at one endhaving an angular or polygonal head f for the application of a Wrench orhandle for turning the shaft. As in the work-table of the patentreferred to, there is a plate or head G at the outer end of the trunnionwhich overlaps the end of the work-holder and is adapted to be clamped5o thereto to hold it from rotation by a bolt H, which engages a nut I),attached to or integral with the trunnion.

For accurate adjustment of the Work-holder a scale and index areprovided, as in the case of the work-table of the machine of the patentbefore mentioned.

Besides presenting the work at an angle by the revolution of the holderon the trunnion, we provide for presenting it at an angle by hinging orpivoting to one of the sides of the holder a plate I, havingclamping-grooves or other means for the attachment of the Work thereto,the axis of the pivot or hinge being at right angles to thetrunnion-axis. The plate I is placed between a pair of flanges or ledgesa and a, and it is hinged thereto by a pivot-pin K passing through eachledge and screwed to the plate. Said flanges or ledges firmly supportthe plate against lateral movement. For tilting and supporting the platein the position to which it may be tilted a screw L is mounted in athreaded lug or bracket g on the inner side of the head G, the outer endof which engages a bearing lug or projection i, secured to the underside of the plate, the work-holder having a slot a to accommodate saidlug 2', and the trunnion being provided with a hole b for the passage ofthe screw. For revolving the screw it has 8) at its inner end a spiralgear M, with which engages a like gear-wheel N on the inner end of ahorizontal shaft O,journa1ed in the head G and having outside the latteran angular or polygonal head 0 for the application of a wrench or handlefor turning the shaft.

It will be observed that the plate -tilting mechanism is housed by theWork-holder and trunnion. The side of the worlnholder to which the plateI is pivoted is parallel with the axis of the work-holder, and the plateWhen it is desired to use it with Work that requires to be supported ina plane parallel with the axis of the work-holder rests solidly uponsaid side, so that when it is necessary 5 to place the plate in properposition for such work it is merely lowered until it strikes such sideof the work-holder, no careful adjustment, which of course would requiretime, being necessary to place the plate in position, for it wiil beknown to be in position when it is lowered into contact with the side ofthe work-holder.

The mechanism for tilting the plate is very simple, and as it is notconnected to the plate it does not interfere with the rotation of thework-holder, it being necessary when the latter is to be turned merelyto see that the screw L does not protrude beyond the trunnions. Thevarious angular heads for the application of a wrench or handle are ofthe same size and shape, so that one wrench or handle may answer forall.

Though we show our work-table applied to our patented shaper, it is tobe understood that we do not restrict ourselves to its use with saidmachine or any particular machine.

Having thus described our invention, whatwe claim is- 1. In awork-table, the combination of a hollow work-holder having a tiltingwork-holding plate, and plate-tilting means within the work-holder.

2. In a work-table, the combination of a hollow work-holder having atilting work-holding plate, and plate-tilting mechanism comprising apart passing from within the workholder through an opening in the walletthe work-holder and engaging the plate.

3. In a work-table, the combination of a hollow work-holder having atilting work-holding plate, and plate-tilting mechanism comprising ascrew that passes through an opening in the wall of the work-holder toact on the plate.

4. In a work-table, the combination of a rotatable work-holder having aside parallel with its axis of rotation, a work-holding plate pivoted tosuch side and having a plane surface next the latter that rests incontact therewith when the plate is placed in a position parallel withthe work-holder axis, and. means for tilting said plate. I

5. In a work-table, the combination of a hollow, rotatable work-holderhaving a side parallel with its axis of rotation, a work-holding platepivoted to such side and adapted to rest thereon when placed in aposition parallel with the work-holder axis, and means within thework-holder for tilting said plate.

6. In a work-table, the combination of a work-holder having a tiltingwork-holding plate, the work-holder having flanges on opposite sides ofthe plate and extending from end to end of the plate and between whichat one end said plate is pivoted, and plate-tilting mechanism.

'7. In a work-table, the combination of a rotatable work-holder, atilting work-holding plate on said work-holder, plate-tilting mechanism,and a support for such mechanism, relative to which the work-holderturns, substantially as and for the purpose described.

8. In a work-table, the combination of a rotatable work-holder a tiltingwork-holding plate on said work-holder, plate-tilting mech anismcomprising a screw engaging but unconnected with the plate, and asupport for such mechanism relative to which the workholder turns,substantially as and for the purpose described.

9. In a work-table, the combination of a work-holder having a tiltingwork-holding plate, a support on which said work-holder is mounted toturn, a clamping-head for the work-holder, and platetilting mechanismmounted on such head, substantially as and for the purpose described.

10. In a work-table, the combination of a work-holder having a tiltingwork-holding plate, a trunnion on which said holder is mounted, aclamping head for the workholder, and a screw engaging a threadedprojection on said head and adapted to tilt the v plate, substantiallyasand for the purpose described.

11. In a work-table, the combination of a work-holder having a tiltingwork-holding plate, a trunnion on which said work-holder is mounted, aclamping-head for the work-

